Re: what would you do?
when you say "one of the classes", does that mean the class in question has a specfic emphasis?
as a new teacher are you trying to lead in advanced, technical stuff?
if not, simply lead at the level you're at instead of going there with beginners.
tell them that beginners should not be focusing on such questions, as it may serve to prolong progress in the early stages. emphasize the loooonnng road ahead, and focus on basics and principles.
i agree with #2: its okay to say 'hey im only a shodan, im here to help with with basics and simple stuff'